Delors building, Public building in European Quarter, Brussels, Belgium.

The Jacques Delors building stands at 99–101 rue Belliard, beside Leopold Park. Its glass facade carries the European Union emblem and the names of the Committee of the Regions in several languages, while a steel lattice structure rises diagonally along one edge. A second volume joins a curved glass drum above red-brown brick to a tall blue-green glass wall that slants inward toward the top.

The structure originally served as the European Parliament location until the 1990s, when activities moved to the Espace Leopold complex. This transition marked a shift in how the European Quarter's infrastructure was utilized.

The building is named after Jacques Delors, the eighth President of the European Commission and the main founder of the Committee of the Regions. Its facade carries the European Union emblem and the names of both committees in several languages, including "Le Comité des Régions" and "van de Regio's".

The location near Leopold Park provides access via Brussels public transportation network, with several stations within walking distance. The central position in the European Quarter makes it easy to visit the building alongside other local sites.

The building was renamed on 18 September 2006 after Jacques Delors, the eighth President of the European Commission, honoured as the main founder of the Committee of the Regions. Before that it was known as the Belliard building, after the street where it stands.